[Wine] More than 50% performance decrease.

[sample]

I just installed Xubuntu 8.04, Wine 0.9.60 and Warcraft 3.

Ive set it so it uses OpenGL and in game i get less than 30fps with everything on low and a low resolution. On Windows i can run it on medium with 1280x800 at 60fps.

Im new to Xubuntu/linux so i dont know what could be causing it.

Is this expected from Wine?

Specs are 1GB RAM, Intel C2D 1.66GHZ, Intel 945GM onboard graphics.